Recent content by Bikestdy

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    Need better hole shot

    I just skimmed through you thread. I use Turning Point props, maybe another one to try, I haven't used others brands, so tell how they compare to others (though I have always been curious). I have a '85 4Winns 170 Horizon (mercruiser 470, 170hp). I run a 4bl 17p prop and I have had no issue...
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    470 Timing

    I was looking a bit and found an article that said a very lean mixture can be a reason for lots of spark advance due to it's slow burn. So I need to look into the tune next. However now, last week on vacation it failed me on the first day, after a little over an hour of running, it suddenly...
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    470 Timing

    As I already said When set to 0* on the marks #1 is at top dead center (pulled plug and verified with socket extension in cylinder). And dwell was properly set at 28.
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    470 Timing

    Choke is fully open. Firing order is correct. And I don't believe it to be a fuel issue, because when it is set far advanced then it runs perfect, idles smooth, good power, no issues. I didn't try to get a reading of how much advance it has,I can try and do that as my timing light allows for...
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    470 Timing

    Hello all, I have a 1985 4Winns 170 Horizon with a Merc 470. My issue is when timing is set to spec (8*) with a timing light, it barely runs and chokes and sputters and backfires when the throttle is goosed. When I turn the distributor to where it runs good, the dampener mark is probably...
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    Correct prop for a Mercruiser 120

    I have a '85 170 Horizon with a Merc 470 (170hp). I run a Turning Point 4bl 17p and that puts me a bit over max rpm but use it for the hole shot power for water sports. A 19p puts me in the the correct rpm range. For general all around try the 17p, the 15 is probably for water sports.
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    Best prop fuel economy

    Your welcome, it isn't often to find someone here with a similar setup so I was kind of excited to see one that I had real experience with for as loosely as I follow the forums. I really haven't paid any attention to what my cruising speed is, and I do not know what my MPG or GPH is (I don't...
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    Best prop fuel economy

    Depending on which 3.7 you have your max engine speed could be different (see image). It would be best if you check the sticker on the top of the valve cover for what your max rpm range actually is. I have a '85 4 Winns 170 Horizon (17ft) with the 3.7 (Merc 470). I run a 17p 4bl Turning point...
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    Prop selection help TP, Solas, Michigan Wheel

    Hi all, I just joined after reading many of your posts so I am looking forward to your advice. I have a 1985 4Winns 170 Horizon 17ft with a Mercruiser 470 170hp with 1.84 gears. I have a 14 ¼ 17p Turning Point 3bl that I damaged this past summer, so I am looking to replace it. Max RPM is...
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